| 2023 Hardiness Zone: | Zone 9b: 25°F to 30°F | |
| 2012 Hardiness Zone: | Zone 9b: 25°F to 30°F | |
| 1990 Hardiness Zone: | Zone 9b: 25F to 30F | |
| Average First Frost Date: | Dec. 1 - Dec. 10 | |
| Average Last Frost Date: | Feb. 11 - Feb. 20 | |
| Koppen-Geiger Climate Zone: | BSk - Cold Semi-Arid Climate | |
| Ecoregion: | ||
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 95330 - Lathrop, CA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 37 | 41 | 43 | 46 | 51 | 56 | 59 | 58 | 56 | 50 | 42 | 36 | 48 |
| Avg Max Temp (°F) | 54 | 61 | 67 | 73 | 81 | 88 | 93 | 92 | 88 | 79 | 64 | 54 | 74 |
| Avg Precip (In.) | 2.86 | 2.52 | 2.33 | .95 | .53 | .09 | .06 | .05 | .34 | .82 | 1.76 | 1.94 | 14.23 |